| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | |
| Mean Max. Temperature (F) | 26.5 | 32.6 | 42.2 | 53.6 | 64.9 | 75.3 | 80.8 | 78.7 | 71.3 | 60.6 | 44.6 | 31.3 | 55.2 |
| Highest Mean Max. Temperature (F) | 41.2 | 42.3 | 51.0 | 60.9 | 69.8 | 80.6 | 84.5 | 81.8 | 77.7 | 68.4 | 50.6 | 44.1 | 59.1 |
| Year Highest Occurred | 1981 | 1977 | 1986 | 1989 | 1963 | 1977 | 1963 | 1985 | 1979 | 1963 | 1962 | 1980 | 1981 |
| Lowest Mean Max. Temperature (F) | 12.6 | 18.3 | 33.1 | 45.3 | 60.2 | 68.6 | 76.4 | 73.1 | 66.3 | 47.4 | 36.7 | 20.3 | 51.8 |
| Year Lowest Occurred | 1984 | 1974 | 1962 | 1984 | 1975 | 1969 | 1986 | 1968 | 1961 | 1969 | 1972 | 1978 | 1984 |
| Mean Temperature (F) | 9.7 | 15.5 | 26.7 | 37.0 | 46.4 | 55.1 | 61.3 | 59.6 | 51.6 | 40.8 | 28.0 | 15.0 | 37.2 |
| Highest Mean Temperature (F) | 21.6 | 25.7 | 35.2 | 43.0 | 50.0 | 59.5 | 63.5 | 63.1 | 56.7 | 47.1 | 32.4 | 26.9 | 41.5 |
| Year Highest Occurred | 1981 | 1986 | 1990 | 1989 | 1963 | 1988 | 1963 | 1983 | 1990 | 1963 | 1962 | 1980 | 1981 |
| Lowest Mean Temperature (F) | -3.5 | -0.4 | 16.6 | 30.7 | 42.8 | 50.7 | 58.8 | 56.2 | 47.0 | 33.2 | 22.0 | 5.4 | 33.8 |
| Year Lowest Occurred | 1984 | 1974 | 1964 | 1970 | 1971 | 1969 | 1962 | 1968 | 1970 | 1969 | 1979 | 1978 | 1975 |
| Mean Min. Temperature (F) | -7.1 | -1.7 | 11.1 | 20.4 | 27.8 | 34.8 | 41.9 | 40.5 | 31.8 | 20.9 | 11.3 | -1.4 | 19.2 |
| Highest Mean Min. Temperature (F) | 6.1 | 11.3 | 19.8 | 25.9 | 32.6 | 40.7 | 45.6 | 46.0 | 38.4 | 29.7 | 15.3 | 9.6 | 23.9 |
| Year Highest Occurred | 1980 | 1986 | 1990 | 1990 | 1981 | 1988 | 1981 | 1982 | 1990 | 1972 | 1978 | 1980 | 1981 |
| Lowest Mean Min. Temperature (F) | -19.6 | -19.1 | -0.3 | 14.3 | 23.1 | 30.3 | 38.4 | 35.1 | 26.7 | 13.9 | 5.9 | -9.6 | 14.9 |
| Year Lowest Occurred | 1984 | 1974 | 1964 | 1970 | 1971 | 1976 | 1971 | 1962 | 1968 | 1975 | 1975 | 1978 | 1964 |
| Mean Precipitation (in.) | 0.73 | 0.67 | 0.73 | 0.75 | 0.79 | 0.77 | 1.70 | 1.84 | 1.15 | 0.89 | 0.69 | 0.86 | 11.57 |
| Highest Precipitation (in.) | 2.43 | 2.12 | 1.34 | 2.59 | 1.58 | 3.75 | 3.75 | 4.08 | 3.59 | 4.11 | 1.81 | 3.58 | 17.82 |
| Year Highest Occurred | 1979 | 1986 | 1983 | 1990 | 1980 | 1969 | 1968 | 1971 | 1990 | 1969 | 1983 | 1983 | 1969 |
| Lowest Precipitation (in.) | 0.08 | 0.00 | 0.09 | 0.00 | 0.00 | 0.00 | 0.35 | 0.38 | 0.05 | 0.00 | 0.10 | 0.05 | 8.65 |
| Year Lowest Occurred | 1983 | 1972 | 1977 | 1979 | 1974 | 1980 | 1972 | 1985 | 1987 | 1964 | 1989 | 1982 | 1987 |
| Heating Degree Days (F) | 1714. | 1386. | 1187. | 840. | 577. | 301. | 121. | 178. | 402. | 750. | 1110. | 1550. | 10116. |
| Cooling Degree Days (F) | 0. | 0. | 0. | 0. | 0. | 0. | 6. | 11. | 0. | 0. | 0. | 0. | 17. |